Sad news indeed, as I'm quite fond of this comic, occasional criticisms aside. It's an interesting idea and well-written.
The art is usually pretty good (with exceptions like cars), too.
But I had noticed updates were getting slower, so if you need some time to regain your focus, I'm not completely surprised and can't complain, especially since you plan to come back fairly soon.
I look forward to seeing WSWB return and I hope your break is fruitful.